/*
 * Copyright (C) 2008 ZXing authors Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the
 * License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 */

package com.google.zxing.client.android;

import up_down_share.updaonwshare.v01.R;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Result;
import com.google.zxing.ResultMetadataType;
import com.google.zxing.ResultPoint;
import com.google.zxing.client.android.camera.CameraManager;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.PreferenceManager;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import java.io.IOException;
import java.util.Collection;
import java.util.EnumSet;
import java.util.Map;
import java.util.Set;





/**
 * This activity opens the camera and does the actual scanning on a background thread. It draws a viewfinder to help the user place the barcode correctly, shows feedback as the image processing is
 * happening, and then overlays the results when a scan is successful.
 * 
 * @author dswitkin@google.com (Daniel Switkin)
 * @author Sean Owen
 */
public final class CaptureActivity extends Activity implements SurfaceHolder.Callback
{

	private static final String TAG = CaptureActivity.class.getSimpleName();

	private static final long DEFAULT_INTENT_RESULT_DURATION_MS = 1500L;
	private static final long BULK_MODE_SCAN_DELAY_MS = 1000L;

	public static final int HISTORY_REQUEST_CODE = 0x0000bacc;

	private static final Set<ResultMetadataType> DISPLAYABLE_METADATA_TYPES = EnumSet.of(ResultMetadataType.ISSUE_NUMBER, ResultMetadataType.SUGGESTED_PRICE,
			ResultMetadataType.ERROR_CORRECTION_LEVEL, ResultMetadataType.POSSIBLE_COUNTRY);
	// --------------------------------------------------
	// ----- constants -----
	// --------------------------------------------------

	private CameraManager cameraManager;
	private CaptureActivityHandler handler;
	private Result savedResultToShow;
	private ViewfinderView viewfinderView;
	private TextView statusView;
	private View resultView;
	private Result lastResult;
	private boolean hasSurface;
	private boolean copyToClipboard;
	private IntentSource source;
	private String sourceUrl;
	private String returnUrlTemplate;
	private boolean returnRaw;
	private Collection<BarcodeFormat> decodeFormats;
	private String characterSet;
	private InactivityTimer inactivityTimer;
	private BeepManager beepManager;
	private ImageView imageview;
	private CustomView customview;

	// --------------------------------------------------
	// ----- properties -----
	// --------------------------------------------------

	ViewfinderView getViewfinderView()
	{

		Log.d("CaptureActivity", "getViewfinderView()");
		return viewfinderView;
	}

	public Handler getHandler()
	{
		Log.d("CaptureActivity", "getHandler()");
		return handler;
	}

	CameraManager getCameraManager()
	{
		Log.d("CaptureActivity", "getCameraManager()");
		return cameraManager;
	}

	// --------------------------------------------------
	// ----- extends -----
	// --------------------------------------------------
	@Override
	public void onCreate(Bundle icicle)
	{
		super.onCreate(icicle);

		Log.d("CaptureActivity", "onCreate()");

		Window window = getWindow();
		window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
		setContentView(R.layout.capture_login2);

		hasSurface = false;
		inactivityTimer = new InactivityTimer(this);
		beepManager = new BeepManager(this);

		Button demoButton = (Button) findViewById(R.id.Demo_buttonCap_login2);
		demoButton.setOnClickListener(new View.OnClickListener()
		{

			@Override
			public void onClick(View v)
			{
				// TODO Auto-generated method stub
				startActivity(new Intent("createUser"));
			}
		});

	}

	@Override
	protected void onResume()
	{
		super.onResume();

		// CameraManager must be initialized here, not in onCreate(). This is
		// necessary because we don't
		// want to open the camera driver and measure the screen size if we're
		// going to show the help on
		// first launch. That led to bugs where the scanning rectangle was the
		// wrong size and partially
		// off screen.

		Log.d("CaptureActivity", "onResume()");
		cameraManager = new CameraManager(getApplication());

		viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view);
		viewfinderView.setCameraManager(cameraManager);

		imageview = (ImageView) findViewById(R.id.imageView1_captureLogin2);
		calcuteBitmap(R.drawable.mask2);

		handler = null;
		lastResult = null;

		resetStatusView();

		SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
		SurfaceHolder surfaceHolder = surfaceView.getHolder();
		if (hasSurface)
		{
			// The activity was paused but not stopped, so the surface still
			// exists. Therefore
			// surfaceCreated() won't be called, so init the camera here.
			initCamera(surfaceHolder);
		}
		else
		{
			// Install the callback and wait for surfaceCreated() to init the
			// camera.
			surfaceHolder.addCallback(this);
			surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
		}

		beepManager.updatePrefs();

		inactivityTimer.onResume();

		// 涓嬮潰灏辨槸鑾峰彇Intent锛屽苟涓斾粠涓緱鍒�		// source,decodeFormats,characterSet杩欎笁涓彉閲忔墍闇�鐨勫�
		Intent intent = getIntent();
		source = IntentSource.NONE;
		decodeFormats = null;
		characterSet = null;
		// 浠ヤ笂涓変釜鍙傛暟鏄姹傛壂鎻忚�蹇呴』鎻愪緵鐨�
		if (intent != null)
		{

			String action = intent.getAction();
			String dataString = intent.getDataString();

			if (Intents.Scan.ACTION.equals(action))
			{
				// public static final String ACTION =
				// "com.google.zxing.client.android.SCAN";

				// Scan the formats the intent requested, and return the result
				// to the calling activity.
				source = IntentSource.NATIVE_APP_INTENT;
				decodeFormats = DecodeFormatManager.parseDecodeFormats(intent);

				if (intent.hasExtra(Intents.Scan.WIDTH) && intent.hasExtra(Intents.Scan.HEIGHT))
				{
					int width = intent.getIntExtra(Intents.Scan.WIDTH, 0);
					int height = intent.getIntExtra(Intents.Scan.HEIGHT, 0);
					if (width > 0 && height > 0)
					{
						cameraManager.setManualFramingRect(width, height);
					}
				}

				String customPromptMessage = intent.getStringExtra(Intents.Scan.PROMPT_MESSAGE);
				if (customPromptMessage != null)
				{
					statusView.setText(customPromptMessage);
				}

			}

			characterSet = intent.getStringExtra(Intents.Scan.CHARACTER_SET);

			// 鍒拌繖閲屼负姝紝涓変釜鍙橀噺锛歴ource,decodeFormats,characterSet鐨勫�閮借缃ソ浜嗐�

		}
	}

	@Override
	protected void onPause()
	{

		Log.d("CaptureActivity", "onPause()");

		if (handler != null)
		{
			handler.quitSynchronously();
			handler = null;
		}
		inactivityTimer.onPause();
		cameraManager.closeDriver();
		if (!hasSurface)
		{
			SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
			SurfaceHolder surfaceHolder = surfaceView.getHolder();
			surfaceHolder.removeCallback(this);
		}
		super.onPause();
	}

	@Override
	protected void onDestroy()
	{

		Log.d("CaptureActivity", "onDestroy");

		inactivityTimer.shutdown();
		super.onDestroy();
	}

	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event)
	{

		Log.d("CaptureActivity", "onKeyDown");

		switch (keyCode)
		{
			case KeyEvent.KEYCODE_BACK:
				if (source == IntentSource.NATIVE_APP_INTENT)
				{
					setResult(RESULT_CANCELED);
					finish();
					return true;
				}
				if ((source == IntentSource.NONE || source == IntentSource.ZXING_LINK) && lastResult != null)
				{
					restartPreviewAfterDelay(0L);
					return true;
				}
				break;
			case KeyEvent.KEYCODE_FOCUS:
			case KeyEvent.KEYCODE_CAMERA:
				// Handle these events so they don't launch the Camera app
				return true;
				// Use volume up/down to turn on light
			case KeyEvent.KEYCODE_VOLUME_DOWN:
				cameraManager.setTorch(false);
				return true;
			case KeyEvent.KEYCODE_VOLUME_UP:
				cameraManager.setTorch(true);
				return true;
		}
		return super.onKeyDown(keyCode, event);
	}

	// --------------------------------------------------
	// ----- functions -----
	// --------------------------------------------------
	private void decodeOrStoreSavedBitmap(Bitmap bitmap, Result result)
	{

		Log.d("CaptureActivity", "decodeOrStoreSavedBitmap()");

		// Bitmap isn't used yet -- will be used soon
		if (handler == null)
		{
			savedResultToShow = result;
		}
		else
		{
			if (result != null)
			{
				savedResultToShow = result;
			}
			if (savedResultToShow != null)
			{
				Message message = Message.obtain(handler, R.id.decode_succeeded, savedResultToShow);
				handler.sendMessage(message);
			}
			savedResultToShow = null;
		}
	}

	@Override
	public void surfaceCreated(SurfaceHolder holder)
	{

		Log.d("CaptureActivity", "surefaceCreated");

		if (holder == null)
		{
			Log.e(TAG, "*** WARNING *** surfaceCreated() gave us a null surface!");
		}
		if (!hasSurface)
		{
			hasSurface = true;
			initCamera(holder);
		}
	}

	@Override
	public void surfaceDestroyed(SurfaceHolder holder)
	{

		Log.d("CaptureActivity", "surfaceDestroyed()");

		hasSurface = false;
	}

	@Override
	public void surfaceChanged(SurfaceHolder holder, int format, int width, int height)
	{

		Log.d("CaptureActivity", "surfaceChanged()");
	}

	/**
	 * A valid barcode has been found, so give an indication of success and show the results.
	 * 
	 * @param rawResult The contents of the barcode.
	 * @param barcode A greyscale bitmap of the camera data which was decoded.
	 */
	public void handleDecode(Result rawResult, Bitmap barcode)
	{

		Log.d("CaptureActivity", "handleDecode()");

		inactivityTimer.onActivity();
		lastResult = rawResult;
		// ResultHandler resultHandler =
		// ResultHandlerFactory.makeResultHandler(this, rawResult);

		boolean fromLiveScan = barcode != null;
		if (fromLiveScan)
		{
			// historyManager.addHistoryItem(rawResult, resultHandler);
			// Then not from history, so beep/vibrate and we have an image to
			// draw on
			beepManager.playBeepSoundAndVibrate();
			drawResultPoints(barcode, rawResult);
		}

		System.out.println("In CaptureActivity.handleDecode(), the source is :" + source);
		switch (source)
		{
			case NATIVE_APP_INTENT:
			case PRODUCT_SEARCH_LINK:
				handleDecodeExternally(rawResult, barcode);

				break;

		}
	}

	/**
	 * Superimpose a line for 1D or dots for 2D to highlight the key features of the barcode.
	 * 
	 * @param barcode A bitmap of the captured image.
	 * @param rawResult The decoded results which contains the points to draw.
	 */
	private void drawResultPoints(Bitmap barcode, Result rawResult)
	{

		Log.d("CaptureActivity", "drwaResultPoints()");

		ResultPoint[] points = rawResult.getResultPoints();
		if (points != null && points.length > 0)
		{
			Canvas canvas = new Canvas(barcode);
			Paint paint = new Paint();
			paint.setColor(getResources().getColor(R.color.result_points));
			if (points.length == 2)
			{
				paint.setStrokeWidth(4.0f);
				drawLine(canvas, paint, points[0], points[1]);
			}
			else if (points.length == 4 && (rawResult.getBarcodeFormat() == BarcodeFormat.UPC_A || rawResult.getBarcodeFormat() == BarcodeFormat.EAN_13))
			{
				// Hacky special case -- draw two lines, for the barcode and
				// metadata
				drawLine(canvas, paint, points[0], points[1]);
				drawLine(canvas, paint, points[2], points[3]);
			}
			else
			{
				paint.setStrokeWidth(10.0f);
				for (ResultPoint point : points)
				{
					canvas.drawPoint(point.getX(), point.getY(), paint);
				}
			}
		}
	}

	private static void drawLine(Canvas canvas, Paint paint, ResultPoint a, ResultPoint b)
	{

		Log.d("CaptureActivity", "drawline()");

		canvas.drawLine(a.getX(), a.getY(), b.getX(), b.getY(), paint);
	}

	// Briefly show the contents of the barcode, then handle the result outside
	// Barcode Scanner.
	private void handleDecodeExternally(Result rawResult, Bitmap barcode)
	{

		Log.d("CaptureActivity", "handleDecodeExternally()");

		if (barcode != null)
		{
			viewfinderView.drawResultBitmap(barcode);
		}

		long resultDurationMS;
		if (getIntent() == null)
		{
			resultDurationMS = DEFAULT_INTENT_RESULT_DURATION_MS;
		}
		else
		{
			resultDurationMS = getIntent().getLongExtra(Intents.Scan.RESULT_DISPLAY_DURATION_MS, DEFAULT_INTENT_RESULT_DURATION_MS);
		}

		// Since this message will only be shown for a second, just tell the
		// user what kind of
		// barcode was found (e.g. contact info) rather than the full contents,
		// which they won't
		// have time to read.
		if (resultDurationMS > 0)
		{
			// statusView.setText(getString(resultHandler.getDisplayTitle()));
			// statusView.setText("no need to use ResultHandler");
		}

		if (source == IntentSource.NATIVE_APP_INTENT)
		{

			// Hand back whatever action they requested - this can be changed to
			// Intents.Scan.ACTION when
			// the deprecated intent is retired.
			Intent intent = new Intent(getIntent().getAction());
			intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
			intent.putExtra(Intents.Scan.RESULT, rawResult.toString());
			intent.putExtra(Intents.Scan.RESULT_FORMAT, rawResult.getBarcodeFormat().toString());
			byte[] rawBytes = rawResult.getRawBytes();
			if (rawBytes != null && rawBytes.length > 0)
			{
				intent.putExtra(Intents.Scan.RESULT_BYTES, rawBytes);
			}
			Map<ResultMetadataType, ?> metadata = rawResult.getResultMetadata();
			if (metadata != null)
			{
				if (metadata.containsKey(ResultMetadataType.UPC_EAN_EXTENSION))
				{
					intent.putExtra(Intents.Scan.RESULT_UPC_EAN_EXTENSION, metadata.get(ResultMetadataType.UPC_EAN_EXTENSION).toString());
				}
				Integer orientation = (Integer) metadata.get(ResultMetadataType.ORIENTATION);
				if (orientation != null)
				{
					intent.putExtra(Intents.Scan.RESULT_ORIENTATION, orientation.intValue());
				}
				String ecLevel = (String) metadata.get(ResultMetadataType.ERROR_CORRECTION_LEVEL);
				if (ecLevel != null)
				{
					intent.putExtra(Intents.Scan.RESULT_ERROR_CORRECTION_LEVEL, ecLevel);
				}
				Iterable<byte[]> byteSegments = (Iterable<byte[]>) metadata.get(ResultMetadataType.BYTE_SEGMENTS);
				if (byteSegments != null)
				{
					int i = 0;
					for (byte[] byteSegment : byteSegments)
					{
						intent.putExtra(Intents.Scan.RESULT_BYTE_SEGMENTS_PREFIX + i, byteSegment);
						i++;
					}
				}
			}
			sendReplyMessage(R.id.return_scan_result, intent, resultDurationMS);

		}
	}

	private void sendReplyMessage(int id, Object arg, long delayMS)
	{

		Log.d("CaptureActivity", "sendReplyMessage()");

		Message message = Message.obtain(handler, id, arg);
		if (delayMS > 0L)
		{
			handler.sendMessageDelayed(message, delayMS);
		}
		else
		{
			handler.sendMessage(message);
		}
	}

	private void initCamera(SurfaceHolder surfaceHolder)
	{

		Log.d("CaptureActivity", "initCamera()");

		if (surfaceHolder == null)
		{
			throw new IllegalStateException("No SurfaceHolder provided");
		}
		if (cameraManager.isOpen())
		{
			Log.w(TAG, "initCamera() while already open -- late SurfaceView callback?");
			return;
		}
		try
		{
			cameraManager.openDriver(surfaceHolder);
			// Creating the handler starts the preview, which can also throw a
			// RuntimeException.
			if (handler == null)
			{
				// 鍦ㄦ瀯閫犳柟娉旵aptureActivityHandler涓垱寤鸿В鐮佺嚎绋嬶紝骞跺惎鍔�
				// 鍦ㄦ瀯閫犳柟娉旵aptureActivityHandler涓紝鍚姩鐩告満寮�鎹曟崏鏁版嵁甯�				// 鎹曟崏鍒版瘡涓�暟鎹抚锛屽氨浼犻�缁欒В鐮佺嚎绋嬪幓澶勭悊
				handler = new CaptureActivityHandler(this, decodeFormats, characterSet, cameraManager);
			}
			decodeOrStoreSavedBitmap(null, null);
		}
		catch (IOException ioe)
		{
			Log.w(TAG, ioe);
			displayFrameworkBugMessageAndExit();
		}
		catch (RuntimeException e)
		{
			// Barcode Scanner has seen crashes in the wild of this variety:
			// java.?lang.?RuntimeException: Fail to connect to camera service
			Log.w(TAG, "Unexpected error initializing camera", e);
			displayFrameworkBugMessageAndExit();
		}
	}

	private void displayFrameworkBugMessageAndExit()
	{

		Log.d("CaptureActivity", "displayFramworkBugMessageAndExit()");

		AlertDialog.Builder builder = new AlertDialog.Builder(this);
		builder.setTitle(getString(R.string.app_name));
		builder.setMessage(getString(R.string.msg_camera_framework_bug));
		builder.setPositiveButton(R.string.button_ok, new FinishListener(this));
		builder.setOnCancelListener(new FinishListener(this));
		builder.show();
	}

	public void restartPreviewAfterDelay(long delayMS)
	{

		Log.d("CaptureActivity", "restartPreviewAfterDelay()");

		if (handler != null)
		{
			handler.sendEmptyMessageDelayed(R.id.restart_preview, delayMS);
		}
		resetStatusView();
	}

	private void resetStatusView()
	{

		Log.d("CaptureActivity", "resetStatusView()");

		viewfinderView.setVisibility(View.GONE);
		imageview.setVisibility(View.VISIBLE);
		lastResult = null;
	}

	public void drawViewfinder()
	{

		Log.d("CaptureActivity", "drawViewfinder()");
		viewfinderView.drawViewfinder();
	}

	// 璁＄畻Rect
	public Rect calcuteRect()
	{
		// portrait鏂瑰悜
		DisplayMetrics dm = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(dm);
		int screenX = dm.widthPixels;
		int screenY = dm.heightPixels;

		int width = screenX * 3 / 4;
		int height = width;

		int leftoffset = (screenX - width) / 2;
		int topoffset = (screenY - height) / 2;

		Rect defineRect = new Rect(leftoffset, topoffset, leftoffset + width, topoffset + height);

		return defineRect;
	}

	public void calcuteBitmap(int resID)
	{
		Bitmap bitmap = ((BitmapDrawable) getResources().getDrawable(resID)).getBitmap();
		System.out.println("Bitmap width :" + bitmap.getWidth());
		System.out.println("Bitmap height: " + bitmap.getHeight());

		DisplayMetrics dm = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(dm);
		int screenWidth = dm.widthPixels;
		int screenHeight = dm.heightPixels;

		System.out.println("Screen width :" + screenWidth);
		System.out.println("Screen height: " + screenHeight);

		int x = (bitmap.getWidth() * screenHeight - screenWidth * bitmap.getHeight()) / screenWidth;

		Bitmap bitmap2 = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight() + x);
		ImageView image = (ImageView) findViewById(R.id.imageView1_captureLogin2);
		image.setImageBitmap(bitmap2);
	}
}
